Home / 139,037.02-191,870.58-77,783.35

Finding the Fourth Proportional to 139,037.02, 191,870.58 and 77,783.35

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Solution

The fourth proportional to 139,037.02, 191,870.58 and 77,783.35 is: 107,340.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,037.02 : 191,870.58 = 77,783.35 : x
  2. Step 2: Convert to fraction form
    139,037.02/191,870.58 = 77,783.35/x
  3. Step 3: Cross multiply
    139,037.02x = 191,870.58 × 77,783.35
  4. Step 4: Simplify right side
    139,037.02x = 14,924,336,478.84
  5. Step 5: Solve for x
    x = 14,924,336,478.84/139,037.02
  6. Step 6: Final answer
    x = 107,340.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.